Grinding mill



Jan. 19 1926. J. 1G. BRYANT GRINDING MILL Filed July 21. 1922 Patented Jan; 19; 1926. I

i QUE j eRI fiINi ii -T f Applfieati eii filedjulj 2 1;

To all whom it may coma-n; v Be "it known 'that I,'JAMns G.1 BRYNT, a citizenof the United States, and. residing at Poi tlHuron in the county of St; Qlai and; State of Michigan, have inventedv a new? and Improved GrindingMilLAof which following is V a specification,

This invention relates to feedi and especially to means for adj nsting the' operative or; grinding faces" ef'two axially alined disks rotatable relative toeach;Qthe'rg and its objeet" is to provide resilient'means for moving the grinding disks on p'l'atesLtQ- ward each other and 'positivemeans for sep;

are-ting these disks/and positively adjns't able means to determine theclea 'ance between these grinding faces when'jin operatii e position. t j x A"-further object pf this; invention is to provide means for automatioallyelosing the feed gate when the gi indingjdisks or-plates" are separated.

Another Obiet s this se ms tetra; Vide a feed worm and distributing plate inltegral with each other so that; the two can be secured in position with the same, fasten ingdevices. 1 a i Another object of this invention v is'jto provide an annular hj'earing 1'01" the min {shaft especially adapted to resist radial pressures-and a second bearing especially a'da pted to resist the'end thrustof the shaft;

annular bearing.

Another object of this invention is to pi vide an end 'thii stbe'aring for the n a'ini V shaft which may serx e as {a IQtalIlBlPfOl' the" Another ohject hi this intention is tb'piaf-j vide a main frame which shall allthfe bearings and in which allthe bearings '49" always be inperfect'alinement." l i The accompanying; drawing is a central longitiidinallvertical section of a grinding min embodying the pr sen fveimibn and? shows a main frame 1 having cylindiical heads 2'I'an'd 3 which are ac'cnrz ttely bored in alinement'with each other. i While being so bored, the ends i015 these heads ai'e facedy 'softhat 'all the patts connectedtqthe inain ness of the head? and are providedwith grooves 7 to reeeivief packingiing's to prevent-the entrance of dust.- VVithin' this head an.

shaft 4 must always function with exact Two heads 5 andB attach the faces outei; bearing-ring 8, balls-*9, an ewer be'ai ing ing held in position by the enu t.

- h i nsisting'"eithe oiitef heating *iing 5 l mite 11s 15 and inner; ring"16. "The; end 17 enter; end

to -drive the "shaft plate. '13; ene- W ms;32s"Posta e;

11:? mm aaaa to the shaft betweenthei heads' 2 and 3"b11t* 7 any) other fdes ired means employed 19 of'a thtust beaifing, ballsi20'and This oi: housing i-18 hol'ds the annular bearing iii-{position on -thefshaftf*Aplate 25ffis Tattache'd to t o d he, mi iste in nf b t outer1beating rings: 8 and-914- are-"s longitudihally by the contro'hstein "231' Attached *to the headf- 3 its "cylindrical I housing 27; having'iajn outer-annular head 28 to which is maimed the sleeve 29 having an" end flange"'30.YThe'onteiiend"hf this sleeve formed-with 0am teeth i'31which c0:

opefate withth c rresptndin cam 7 teeth tol'the head 28 of the housing 27 and .the- -end ashe n he r" mounted on th esleeife lindrical central p'orgi' H I? l lfonopposite sides 'thereofth'rough' :whi'ehfithe bolts -';e'tend,:j "s rings-42. 11 these bolts in the se cnps' 'si ve 35 have guts fee {a d ing 5 t0 piesis fthis yoke" toward "the head w A disk eonnects f the outer ends of these" jcnpsand'toi it am1t '445 is attached.- The.

onte'r end of the stemg23 isthreaded;to fit I in this nut' eiels and a j a'mb; nut may I be scfeiired down eto:p 'irentfrotation of this" 1 stemf The 1act1 of e igma" is 101 past the yokeand the' 1111544 toward the left in thejdrawing and with them; the'stem 23"anclf shaft 143" Thislpressuife istaken up by the [thrust bearing bmp i ing the rings 19' and '22 and theballs 20;

*Mouiitieddn'the opposite or forward end of the shaft is a .hub of .the disk 51"to thegrinding plate52 is attached. The feed woi in53 isinte'gi'al with the 1 distribute' jpl a. e. .disk The nd' 55s of the main shaft aefi l which is" also attached to the curately centers the feed worm and distributer plate so that all parts areneces sarily in alinement. The end plate 56 of the main frame 1 is formed with bosses 57 which may be faced off when the heads 2 and 3 are bored and a housing 58 is attached to these bosses by the bolts 59. A removable central ring 60 permits ready assembly and the hand-hole plate 61 permits removal of the nuts which hold in position the parts attached to the disk 51., 7

An end 63 is attached to the housing 58 and supports the grinding late 64, the distributer plate 65, and the chute 66. A hopper 67 of any desired construction maybe mounted on the top of the chute. Bearings 68 may be attached to the chute for the shaft 69 which carries a pulley 70 by means of which the feed going down to, the grinding disks may be kept from arching above the Valve plate 73 which is slidable on flanges 74. The circle 7 5 represent grease cups.

The two grinding plates 52 and (Sgt are held toward each other by springs 42 and the distance betweenthem is determined by the threadedv stem 23 and-the nut 44. The stem is held from aaam 'by'the jamb nut 45. The outer position of the nut iids determined by the depth of the teeth 31 and 32. In order therefore to change the grinding distancebetween the plates 52 and 64, the-jamb nut 45 is released and the stem 23 is turned either one way or the other.

The gate 73 normally controls the feed of grain to the screw 53 which carries it into the space between the distributer plates 54and 65 item which space it passes out radially between the grinder plates 52 and 6% If str awis mixed with the grain, it is liable to accumulate in the space between the distributer plates. The; shaft 7 4 may then be moved to the rightby ineaiis off the camplate 33 to permit the straw topass out ,freelybetween the plates 52 and 54.

In order to stop the' flow of grain while these grinder-plates areseparated, a small bracket 77 maybe. mounted on the chute 66 and a spring 7 8 is provided to pull inward the lever 79, mounted on this bracket. A stem 80 pivoted to this lever at 81 contacts with the end of the feed screw 53 and controls the position of the pin 82 at the outer end of the lever to which is attached the link 84 which actuates the" gate valve85; hen, therefore, the handle 34 is swung to'pull out the shaft 4 to separate the grinder plates, the pin 80 follows this shaft and causes the gate valve85 to fmove inward to cut off the flow of grain from the hopof contact are in lines which are betweerr lines parallel to the shaft and at right angles thereto. I

The details of construction and the pro; portions of'the parts may all be changed by those skilled in the art without departing from the spirit of my invention as set forth in the following claims.

I claim 7 1. In combination, a 'niain 'shaftand' a stub shaft in alineinent therewith, athrust bearing mounted on and supported by one end of the main shaft and adapted to receive oneeiid of the stub shaft, an additional bearing in which the inain s'haft"is:

bearing in which the stub shaft is mounted.

rotatable and slidable, and an additional 2. In'com'bination, a main shaft and a stub shaft in alinement therewith, a thrust bearing" embodying a pair of bearing'rings,

one of said rings being connected to the stub shaft, a housing connected to theother bearing ring and to the main shaft, and additional hearings in which said shafts are slidable.

3. In a grindingmill, the combination with alined annular grinding lateaone of them stationary, a shaft on which the other plate is mounted, bearings for rotatably and slidably supporting the's'haft,resilient means for pressing the plates toward each other, means mounted on the shaft to feed grain to the grinding plates and means operable by the slidable shaft to control the feed of grain to the grinding plates.

l. In" combination, a main shaft and a stub shaft in alinement therewith, a thrust bearing embodying a pair of bearing rings, one of said rings being connected to the stub shaft, a housing connected to the other bearing ring and to the main shaft, additional bearings in which said shafts are slidable, and means for moving said shafts longitudinally in theii bearings.

5. In a grinding mill, the combination with annular grinding-plates, a shaft on which one of said plates is mounted, means to rotate the shaft, bearings for rotatably and slidably supporting the'sh'aft, a housing attached to one end of the shaft, a stem extending into said housing, a thiust hearing between the adjacent ends of the shaft and stein, a sleeve for slidably supporting the stem and having'ca'm teeth in its outer end, ayoke slidable on the sleeve, and having a perforated disk at its outer end through I which the 1 eitends, a .ca'm; plate between. saididiskand the end of the sleeve and cooperating with said cam teeth to move the yoke outward, and means. en.-

gaging said yoke and jsaid'stem to cause the stem'and shaft to move outward with the yoke. Y p

' 6."In a grinding mill, the combination with annular grinding plates, a shaft on which one of said plates is mounted, means Y to rotate the shaft, hearings for. rotatably and slidably supportingf the shaft,;ahous+ I ing attached to one end .of-the shaft. a stem the yoke outward, ands'prings to press-the; yoke, stemand shaft inward.

extending into saidhousing, a-tln'ustbearing between thead'jacent ends of thefsh'a'ft and stem,'a sleeve for slidablysupporting the stem and having cam teeth in its outer;

end, a yoke 'slidableon thesleeve, andhav ing a perforated disk at its outer end through which the. stemextends, a cam plate between said disk and the end of the sleeve and cooperating with said cam teeth to move 7. In a grinding -mill, the combination with annular grinding -plates, a shaft on which one of said plates is mounted, means to rotate the shaft, bearingsfor rotatably and slidably supporting the shaft, a hous ing attached to one end of the shaft, a stem extending intosaid housing, a thrust hearing between the-adjacent ends of the shaft and stem, a sleeve forslidably supporting.

the stem and having cam teeth in its outer end, a yoke slidable on the sleeve. and having a perforated disk at its'outer end.through 7 housing and shaft. res ectively, 'distributer plates attached to the housing andshaft within the grinding plates,- a feed screw formed integral with the distributer plate. attached to the shaft and extendingin alinement with the shaft throu'gh'the distributer plate on the housing, a control gateslidably mounted ini'said chute, lever p'ivoted' on the chute and connected to said gate, and. means connected to the lever and engaging the end of said feedscrew to-cause the g'a'te to obstruct the, chute when the grinding disks are separated by the longitudinal". movement of the shaft 9. In a grinding mill, a pair of alined annular igrindingaplates, one of said plates bei-ngrotatableand adjustable toward and from the other,'a ch ute' to convey grain to the center. of said plates," and a gate operatively connected tov thewrotatable' plateadapted to obstruct the chute toprevent the passage-of grain when. said; plates are separated. Y 1 10:. In .combinati'oma rotatableand slidable main shaft, a stub shaft in alinement therewith, a thrust, bearing between said to thestuh shaft,a second bearing ring and.

.a housing to attach the second bearing ring to themain shaftfa frame embodying a cylindrical portion, and a ball bearing mounted 'onfthe shaft and 'slidable' in said j I cylindrical portion of the frame and secured in position on the. shaft by the housing;

11. .Incombination, a frame embodying heads integraltherewith and having alined cylindrical chambers, j said frame having projection s'whose faces are in a" plane at right angles to. the axis of said chambers,

ahousing secured to said'faces, a'shaft and bearings therefor mounted insaid chambers,

'shafts embodying a .bearing ring attached and grinding plates attached to -said shaft and to the housing.

I 12-. In a grinding mill, the combination I with .alined annular grinding plates, a shaft on which one of'the plates is mounted, beartings for rotatably and slidably supporting the shaft, resilient means for pressing the. plates-toward each other, and means operable by the slidableshaft to control the feed of. grain to the grinding plates.

13.:In a grinding mill, the combination of a frame, a shaft rotatably and slidably mounted "in said frame, means to movesaid 165i shaft longitudinally in either'i direction, a

housing mounted on one end of the frame" .and into which the shaft extends,"co operatmg annular. grinding plates attached to the housing and shaft'respectively, a distributer plate attached to the shaft within the grinding plates, a feed screw formed integral 1 'withthe d istributer plateattached to one ofithe'ggrinding' plates' and extending in alinement with the shaft through the other grinding plate, a control gate, a lever pivoted on the chute and connected to said gate, and. means "connected to the'lever and engaging the-end 'of said'feed s'crew' to cause the gate to stop the feed when the tudinal movement ofthefshaft.

I 14,111 a grinding mill,"the combination of alined. grinding plates, a shaft to support one of the plates, bearings for said" shaft provided with hearing balls having contact the shaft providedwith .bearingfballs having contact points in lines. inclined to the shaft,.means connecting to the thrust bear ing. to positively move the shaft endwise to points inradial lines, a thrust bearing for.

grinding disks are separated by the longiwag ing contact points in lines inclined to the shaft, means connecting to the thrust hearing to positively move the shaft endwise to separate the grinding plates, and means to regulate said endwise movement of the shaft, said thrust bearing serving to position one of the radial hearings on said shaft.

JAS. Gr. BRYANT 

